EP1116195B2 - Door terminal comprising a cover for the emergency button - Google Patents

Abstract

Door with a door terminal for use with or as part of a door, such as sliding doors, folding doors, pivot-hung doors, and automatic doors. The door terminal can comprise a housing accommodating therein an access opening. The door terminal can also have a pushbutton to release a locking device, and a protection pane covering the pushbutton. The door terminal further comprises a stationary attached mounting plate to which the housing is detachably connected and designed to be essentially tamper-proof. Further development of the door terminal intends to make the installation simple and more universal, therefore the mounting plate presents a pivot bearing and a stopper, and the housing presents a cut free web and a lock operable from the front side.

Description

The invention relates to a door terminal with emergency button according to the preamble of claim 1. In a housing of the door terminal is a profile cylinder with an associated electronic circuit, an audible alarm and / or visual display means and an emergency button in conjunction with a switching block for unlocking a locking device arranged, wherein a protection plate located in a cover frame covers the emergency button.

Such door terminals are used as a compact device of emergency exits in access controlled environment application. Such a door terminal has come under the name "DORMA TL-G" on the market. In a fixed housing in the door area housing is a profile cylinder, which is used for alarm acknowledgment and free / arming the door. Furthermore, light-emitting diodes for the operating state "secured / unlocked" are integrated in the housing. The housing also houses an alarm transmitter and an emergency button together with a positively opening switch block. The housing, which is mounted on a base anchored to the wall, is protected by a sabotage contact. The emergency button is provided with a non-splintering protective plastic cover against unintentional operation. By a strong blow break in case of danger spacers of the protective cover, the emergency button is depressed simultaneously. The door can then be opened almost without resistance, whereby an audible alarm is triggered.

From the DE 196 52 348 C2 is also known as a door terminal. In the housing an emergency button, optical and acoustic display means, an electronic circuit and a use for access authorization is arranged. In order to enable the realization of various access systems while maintaining the other components, the use for access authorization is designed modularly replaceable. The emergency button is also covered by a non-splintering protective cover.

In addition, from the DE 94 08 898 U1 a hazard detector has become known, which has both acoustic and optical display means. An internal emergency button is protected against erroneous operation by a glass pane, which must be manually destroyed to trigger the alarm.

In the DE 38 41 099 C2 a door guard is described in which to obtain the access of a emergency button, the housing to cover this button can be pivoted aside. Abusive operation of the housing is prevented by a cover, but must be destroyed in case of danger.

The operation of the emergency button requires in all known from the aforementioned prior art terminals the replacement of the then destroyed cover, that is, there is a corresponding storage costs for new covers and resulting maintenance. In particular, the maintenance costs caused by abusive operations are undesirable on the operator side. By using glass covers instead of plastic covers, the inhibition threshold against abuse is indeed increased, the fundamental problem of the exchange of destroyed covers remains unchanged. Due to practical experience and various guidelines, however, a coverage of the emergency button is recommended to prevent the accidental operation of alarm devices, at least largely.

The invention is therefore based on the object, a door terminal according to the preamble of claim 1 so that an optimal and disassembly safe arrangement and design of the protective screen in terms of ease of use and security is created, the operator requires a low maintenance and installation costs. The door terminal should be suitable both for surface mounting and for flush mounting.

The object of the invention is achieved in that the emergency button of a door terminal can be covered by a fitted with an integrated protective cover plate, which is preferably attached to an associated mounting frame, wherein the protective screen is arranged in a resilient receptacle inside the cover. In the event of an alarm, the protective screen is released axially under a defined actuating force with a clearly perceptible locking sensation. About the now freely movable in the direction of actuation protective screen of the emergency button is pressed. The protective screen is therefore not destroyed and can be pushed back by the maintenance staff later in the original position. The protective disk is guided in the actuation case within the cover frame by a disk shaft and prevented by end stops that it accidentally falls out of the disk shaft when Auflclappen the cover frame. The resilient arrangement of the protective screen in the cover frame is also under the aspect of reducing the damage potential and to reduce the risk of injury to users. Glass is preferable to the plastic version, since the threat of injury increases the inhibition threshold for abusive operation. Basically, however, the risk of injury is excluded, since the protective screen in a sufficient material thickness, which does not splinter under normal operation, is formed.

In principle, all materials can be used for such a protective screen, which are transparent and which are not destroyed when operated. Glass and plastic, which are also easy to use with operating instructions, are suitable and field-tested or print any other information.

Operator side, the reusability of the protective screen and low maintenance is beneficial. Furthermore, existing systems can be easily retrofitted with cover frames. By different dimensions of the inside formed on the cover frame holding arms, the actuation force can be adapted to a wide variety of legal or fire protection requirements.

The support arms are preferably cut free on additional opposite longitudinal walls within the cover frame. The retaining arms each have only an elastically resilient connection to the longitudinal wall and an inwardly directed curvature. Between the curvature and an inner edge of the cover is in the unactuated state, the protective screen. When pressure is applied, the retaining springs spring outward and the protective screen can be pressed over the curvature on the emergency button. During the movement of the protective pane, the longitudinal walls form a shaft in which the protective pane is guided. The movement is limited by trained on the longitudinal walls end stops. The return of the protective screen is only possible for maintenance personnel, since only this is able to fold the secured against abuse cover frame of the mounting frame.

The mounting frame together with the cover frame is a modular assembly, wherein the mounting frame is clipped under light pressure in the terminal housing. The clip connections are made inaccessible from the outside, so that even when the cover frame is open a non-destructive disassembly is excluded. Basically, the module is designed so that it can be used rotated by 180 ° with respect to the folding direction of the cover frame in the housing of the door terminal. The electrical and mechanical devices in the door terminal are designed for such an installation variant.

Unauthorized opening or removal of the cover frame can be complicated by suitable mechanical means and / or signaled by electrical means that trigger a silent alarm in a control center or in the display module, so that appropriate measures can be taken immediately.

The hinged cover frame is pivotally mounted on pins of the mounting frame. During the closing, recesses on the freely movable side of the cover frame engage with complementary snap hooks of the mounting frame, while protrusions projecting on the cover side on the hinge side engage behind the terminal housing on the inside. The cover is additionally blocked to protect against abuse via a bolt that is driven by the profile cylinder. After pressing the emergency button, this blockade can only be reset by authorized persons. In conjunction with the hinge-side projections thus abusive and non-destructive disassembly of the cover can be excluded.

In a deactivation of the bolt unintentional displacement of the cover frame is prevented by the latching between the snap hook and the recesses, which also allow an exact positioning of the cover frame relative to the mounting frame.

This exact positioning is required for a reliable operation of an on-board optional sabotage contact, the z. B. is executable as a microswitch or reed contact. The sabotage contact is actuated via a nose located on the cover frame.

All optical display elements can also be integrated centrally into the module. The result is a compact and therefore inexpensive unit, which is optimized in terms of the use of the existing space in the housing of the door terminal. The arrangement of the display module in the emergency button gives the service staff in particular the opportunity to capture all optical displays of the module and additionally the lighting of the emergency button at a glance.

The interchangeability of the display module reduces the storage costs to be operated by the manufacturer or supplier and makes it possible to retrofit a basic version with the least possible outlay. All wiring in the door terminal is standard wiring, so module replacement requires only a minor adjustment. In addition, the door terminals have a uniform appearance.

Figur 1:

Einen Längsschnitt eines Türterminal im unbetätigten Zustand.

Figur 2:

Einen vergrößerten Bereich der Figur 1.

Figur 3:

Einen vergrößerten Bereich gemäß Figur 2 im betätigten Zustand.

The invention will be explained in more detail with reference to an exemplary embodiment represented more or less schematically in the drawings. It shows:

FIG. 1:

A longitudinal section of a door terminal in the unactuated state.

FIG. 2:

An enlarged section of the FIG. 1 ,

FIG. 3:

An enlarged area according to FIG. 2 in the actuated state.

Identical or equivalent parts are designated by the same reference numerals.

From the FIG. 1 is the basic structure of a door terminal 10 can be seen. In a stationary mounted in the door area housing 11 is a for alarm acknowledgment and free / -Scharfschaltung serving profile cylinder 20. In the housing 11 are further an acoustic alarm transmitter 30 and a button emergency 40th housed together with non-illustrated positively-opening switching block. For the purpose of rapid localization of the door terminal 10 of the emergency button 40 is illuminated and the housing 11 z. B. painted green. The mounted on a non-positively and positively connected to the wall base socket 11 is protected by a sabotage contact. A display module 50 is inserted into the housing 11 of the door terminal 10 and connected by means not shown connectors to the basic circuit. The display module 50 consists of a rectangular board 54, on which circularly arranged display means 51, z. B. in the form of different colored LEDs and flashing lights. A arranged around the emergency button 40 light ring 52 and outside mounted on a mounting frame 55 light rods 53 distribute the light. The thus equipped board 54 is located in the mounting frame 55. A cover 60 with protective disk 61 disposed therein closes the mounting frame 55, so that a complete display module 50 is formed. The mounting frame 55 and the cover 60 are made of translucent material.

The cover frame 60 is pivotally articulated to the mounting frame 55 and has on the inside two opposite longitudinal walls 62. From each longitudinal wall 62, two retaining arms 63 are cut free, which are formed with inwardly directed bulges 64. In the unactivated state ( FIG. 2 ), the protective disk 61 is located between the bulges 64 and an inner edge 65 of the cover frame 60.

In the event of an alarm, the protective disk 61 is removed from the rest position under a defined actuating force with a clearly perceptible latching feel in an axially non-destructive manner. ( FIG. 3 ). About the now freely movable in the direction of actuation protective disk 61, the emergency button 40 is actuated. When pressure is applied, the retaining arms 63 spring outward in free cuts 66 and the protective disk 61 can be pressed onto the emergency button 40 via the bulges 64. The longitudinal walls 62 form during the movement of the protective disk 61 a slot 67 in which the protective disk 61 is guided. The movement is limited by formed on the longitudinal walls 62 end stops 68.

The thus triggered signal causes on the one hand an acoustic and on the other hand an optical alarm. The optical alarm is effected by means of the display means 51, wherein the emitted light is radiated and distributed in particular via the light guides 52, 53.

The return of the protective disk 61 in the rest position is only possible by the maintenance personnel, since only this is able to solve the secured against misuse cover frame 60 of the mounting frame 55. The abusive loosening of the cover 60 caused via a arranged between the cover 60 and the mounting frame 55 microswitch (not shown) a silent alarm in a control center and / or a corresponding signal in the display module 50. If mechanical securing means between the cover 60 and the mounting frame 55th or the housing 11 are present, an abusive disassembly can be done only by destruction of the relevant component. Authorized personnel can open the cover 60 without triggering the signal. The microswitch is freed or armed via an additional key position of the profile cylinder 20.

The housing 11, which is designed for surface-mounted and flush-mounted, is designed such that all necessary for the operation of the various display modules 50 ports are present and the Anzeiegemodule 50 by authorized personnel are interchangeable.

reference numeral

10

door terminal

11

casing

20

profile cylinder

30

acoustic alarm

40

emergency button

50

display module

51

display means

52

light ring

53

light staff

54

circuit board

55

mounting frame

60

Cover

61

windscreen

62

longitudinal wall

63

holding arm

64

bulge

65

inner edge

66

Clear cut

67

shaft

69

end stop

Claims (9)

1. A door terminal having a housing (11) in which are disposed:

   - a profile cylinder (20) with an associated electronic circuit arrangement,

   - an audible alarm transmitter (30) and/or visual display means (51), and

   - an emergency pushbutton (49) in connection with a switch block fro release of a locking device, a protection pane (61) provided in a covering frame (60) covering the emergency pushbutton (40),
   characterized in that

   - the protection pane (61) is non-destructively movable in an axial direction within the covering frame (60), and

   - that the covering frame (60) is formed with holding arms (63) which are disposed on the inside and flexible like springs to the outside.
2. The door terminal of claim 1, characterized in that the protection pane (61) is reversibly movable within the covering frame (60).
3. The door terminal of claim 1, characterized in that the holding arms (63) comprise a camber (64).
4. The door terminal of one of claims 1 to 3, characterized in that the covering frame (60) comprises end stoppers (68).
5. The door terminal of one of claims 1 to 4, characterized in that the holding arms (63) and the end stoppers (68) are formed at opposite longitudinally extending walls (62) of the covering frame (60).
6. The door terminal of one of claims 1 to 5, characterized in that the protection pane (61) is made of glass.
7. The door terminal of one of claims 1 to 6, characterized in that the covering frame (60) is pivotally articulated at a mounting frame (55).
8. The door terminal of claim 7, characterized in that the covering frame (60), together with the mounting frame (55), constitutes an exchangeable modular unit.
9. The door terminal of one of claims 1 to 8, characterized in that the covering frame (60) can be mechanically protected against unauthorized removal or detaching, respectively, and/or unauthorized removal or detaching, respectively, can be electrically signalized.

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